Performance of Electrochemical Oxidation in Treating Textile Industry Wastewater by Graphite Electrode

摘要

This study was conducted to investigate the optimization and reduction of the toxicity level of the textileindustry wastewater using electrochemical oxidation. We assessed the effect of current density and pH andfound that the maximum removal of COD and colour was at the current density of 0.28A/cm 2 and at a pH of5. The performance of graphite electrode for COD removal was also reached within 120 th minute at 2.5M ofNaCl concentration. The biodegradability was improved because ratio of BOD 5 /COD was increased by94.46% from 0.015 to 0.271 and the toxicity level was successfully reduced from 1.195% to 0.129%. It wasobserved that the removal of oil and grease can be up to 82.02%. It can be concluded that the graphiteelectrode is effective for treating textile wastewater.